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UNITED STATES PATENTy OFFICE.

EMORY STOCKWELL, lOF STAMFORD, CONNECTICUT, ASSIGNOR TO THE YALE & TOWNEMANUFACTURING COMPANY, OF SAME PLACE.

SAFE-DOO R.

SPECIFICATION forming part of Letters Patent No. 296,643, dated April 8,1884.

' Application filed February 27, 1883.

To all whom t may concern:

Be it known that I, EMonY STOGKWELL, of Stamford, in the county ofFairfield and State of Connecticut, have invented certain new and usefulImprovements in Safe and Vault Doors,

of which the following is a specification.

The object of my invention is to simplify, cheapen, strengthen, andotherwise materially improve the construction of safe or vault doors.Heretofore it has been customary to castthe iianges or frames ofsafe-doors in one piece, and to secure the front plate of the doorthereto. In the style of safes where the bolts and lock are placed backof the filling, a curb or recess is usually formed in the rear face ofthe door for the reception of the lock and bolt-work. This structure hasheretofore been composed of several plates suitably secured to theflanges or frame of the door. This method of manufacture involves themaking of a number of separate pieces, and the subsequent labor offastening them together, and, among other defeet-s, the constructionleaves the side flanges, which are preferably thin, insufficiently sup-2 5 ported against lateral strain. Vith the ordinary construction, also,it is not practicable to so iill the door that the inside plate willrest against the filling, which is therefore not properly held in place.Under these circumstances 3o it is liable to flake off and to interferewith the proper working of the bolt-work and the lock. The wet lling,which is ordinarily used for such doors, swells more or less,and isliable to cause the flanges or frame to spring outward and distort orburst the door.

My invention consists, first, in casting the door frame or anges and thecurb or recess, which is also the bolt-supporting plate, in one piece;and, second, in extending the casting 4o entirely across the door-frame,so as to firmly brace and strengthen it.

rIhe advantages of my improvements are, the reduction in the cost ofmanufacture by decreasing the number of parts, and the corre- 4 5spending diminution of the labor of assembling them. The strength of thedoor is greatly increased, as the bolt-supporting plate or curb extendsfrom flange to iiange across the door and braces them against lateralstrains, caused (No model.)

by the swelling of the filling or otherwise, and 5o the flaking off orsifting out of the filling, which would not only beinj urious to theworking of the lock, but would impair its own integrity, is prevented.The security of the safe is also increased, and as thevlocl: and boltsare attached to a part of the frame itself, they cannot so readily bedriven off as where the boltsupporting plate is a separate piece.

In the accompanying drawings, Figure l is a plan view of the inside ofmy improved safe- 6o door. Fig. 2 is a section on the line 2 2 of Fig.

l; Fig. 3, a plan View of the inside of a door, partly broken away toshow parts beneath the, surface, and Fig. 4L is a section on the lineLia of Fig. 3.

The frame or flanges of the door A and the curb or recessedbolt-supporting plate B are cast in one piece, preferably of the generalcontour illustrated in Fig. 3 of the drawings-that is, with theelongated vertical chamber 0r re- 7o cess F near the edge of the doorfor the reception of the bolts F and carrying-bar G, and a lateralrecess or extension, BQ in said chamber,in which the tongue H ofthebolt-work and the dogging devices-are placed. The sides C ofthe curb orrecess B preferably constitute guides for the bearing-arms C2 C2, whichproject laterally from the tongue H of the boltwork. The throw of thebolt-work is limited by stops C on the tongue of the bolt-work,andthebolt-supporting plate orbottom of the curb.

D D represent the sleeves of the bolt-work and lock-spindles, and E theindependentlyattached front plate of the door. The web or brace bextends from the curb to the opposite 8 5 side of the framing, and formsa part of the same casting. The curb for the bolt-work and lock issunken withintherear face of the door, so that the filling can come upflush with the inside of the plate and curb, and the inside plate of thedoor can be placed over them and bear firmly against the filling atallpoints, thus giving the greatest attainablethickness of lilling, andconsequent security against re.

I prefer to make the curb and cross-brace or supporting-plate of theshape illustrated in the drawings, because it is more economical and atthe same time gives ample strength. It is obvious, however, that Whilesuch a construc- 2. The combination, substantially as set tion possessesmaterial advantages, it is not a forth, of the frame or anges, the platecast in necessary accompaniment of my invention. one piece therewith,andprovided With a curb I do not claim asafe-door casting having the orrecess for the reception of the lock and bolt- 5 flanges ofthelock-plate cast together in one Work, and the brace or reduced portionof the 2o piece, the plate being formed With a curb to casting b,Whichextends from the curb to the receive the lock and bolt-Work. oppositeflange of the door-frame.

I claim as my invention- In testimony whereof I have hereunto subl. Thecombination, substantially as set scribed my name this 29th day ofJanuary, A. Io forth, of the door-flanges and the plate cast in D. 1883.

one piece therewith, the plate being` provided with a lock-curb andstops, and guides for the EMORY STOOKWELL' bolt-Work, the Whole being soarranged that WVitnesses: the lling of the door may be Hush with the 4SOHUYLER MERRITT, 15 inside of said plate and curb. GEO. E. VHITE.

